[8u20] Request for approval: 8038615 test262 repo is now a git repo in github

[A. Sundararajan]

Please approve backport of the following fix from jdk9 to jdk8u20. Fix 
backported 'as is' with no jdk8u20 specific change.

Bug: https://bugs.openjdk.java.net/browse/JDK-8038615
jdk9 webrev thread: 
http://mail.openjdk.java.net/pipermail/nashorn-dev/2014-March/002870.html
jdk9 changeset: http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/1a9a2d8bd800

Thanks,
-Sundar